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[ft-devel] Issue with CFF implementation limits

From: Ewald Hew
Subject: [ft-devel] Issue with CFF implementation limits
Date: Wed, 27 Dec 2017 19:24:17 +0800

Hi all,

I've found an issue with certain Type 1 glyphs being rejected by the
new Adobe engine for having too many stems. According to the
specification, CFF charstrings can have at most 96 stem hints (cf.,
but this limitation is not in place for Type 1 charstrings.

I've attached a really extreme case of this, from `ztm-Reg.pfb'
( Glyph 479 has a
whopping 344 hints!

A simple fix may be to remove the limit for Type 1 fonts, but I don't
know if this is good practice or wouldn't cause other problems in the
hinter logic. Any input or suggestions are greatly appreciated!


Attachment: debug.log
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Attachment: ft.png
Description: PNG image

Attachment: ad.png
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